Register      Login
Crop and Pasture Science Crop and Pasture Science Society
Plant sciences, sustainable farming systems and food quality
RESEARCH ARTICLE

Month of harvest and yield components of tea tree. II. Oil concentration, composition, and yield

GJ Murtagh and GR Smith

Australian Journal of Agricultural Research 47(5) 817 - 827
Published: 1996

Abstract

Changes in the concentration, composition, and yield of oil in coppice growth of tea tree (Melaleuca alternzfolia) were assessed when plants were harvested in different months. Oil concentrations in leaves were lower when plants were harvested in July-September than in other months, but biomass yields were higher. Consequently, there was no consistent effect of harvest month on oil yield. Oil yield varied as much between the same month in different years, as between months within a year. The oil concentration in one harvest was positively related to the biomass yield at the previous harvest of the same plants, suggesting that a carryover of energy reserves contributed to oil production. The oil concentration was also positively related to the mean air temperatures over the 3 months before harvest. The proportion of the economically significant compounds in oil, terpinen-4-01 and 1,8-cineole, was not affected by either the month of harvest or regrowth cycle, but other compounds did change. There was a significant loss of monoterpene olefins from oil which was present at high concentrations.

Keywords: Melaleuca alternifolia; environmental effects

https://doi.org/10.1071/AR9960817

© CSIRO 1996

Committee on Publication Ethics


Rent Article (via Deepdyve) Export Citation Cited By (7) Get Permission

View Dimensions